* fix(nyz): fix gym_hybrid env not scale action bug

* feature(nyz): add PADDPG basic implementation for hybrid action space

* fix(nyz): fix td3/d4pg comatibility bug with new modifications

* fix(nyz): fix hybrid ddpg action type grad bug and update config

* feature(nyz): add eps greedy + multinomial wrapper and gym_hybrid ddpg convergence config

* style(nyz): update PADDPG in README

* test_model_hybrid_qac

* fix_typo_in_README

* test_policy_hybrid_qac

* polish(nyz): polish hybrid action space to dict structure and polish unittest

* fix(nyz): fix td3bc compatibility bug
Co-authored-by: N李可 <like2@CN0014008466M.local>